text: /* err/error.c
   * 
   * Copyright (C) 1996, 1997, 1998, 1999, 2000 Gerard Jungman, Brian Gough
   * 
   * This program is free software; you can redistribute it and/or modify
   * it under the terms of the GNU General Public License as published by
   * the Free Software Foundation; either version 2 of the License, or (at
   * your option) any later version.
   * 
   * This program is distributed in the hope that it will be useful, but
   * WITHOUT ANY WARRANTY; without even the implied warranty of
   * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU
   * General Public License for more details.
   * 
   * You should have received a copy of the GNU General Public License
   * along with this program; if not, write to the Free Software
   * Foundation, Inc., 675 Mass Ave, Cambridge, MA 02139, USA.
   */
  
  #include <config.h>
  #include <stddef.h>
  #include <stdlib.h>
  #include <stdio.h>
  
  #include <gsl/gsl_errno.h>
  #include <gsl/gsl_message.h>
  
  gsl_error_handler_t * gsl_error_handler = NULL;
  
  static void no_error_handler (const char *reason, const char *file, int line, int gsl_errno);
  
  void
  gsl_error (const char * reason, const char * file, int line, int gsl_errno)
  {
    if (gsl_error_handler) 
      {
        (*gsl_error_handler) (reason, file, line, gsl_errno);
        return ;
      }
  
    gsl_stream_printf ("ERROR", file, line, reason);
    abort ();
  }
  
  gsl_error_handler_t *
  gsl_set_error_handler (gsl_error_handler_t * new_handler)
  {
    gsl_error_handler_t * previous_handler = gsl_error_handler;
    gsl_error_handler = new_handler;
    return previous_handler;
  }
  
  
  gsl_error_handler_t *
  gsl_set_error_handler_off (void)
  {
    gsl_error_handler_t * previous_handler = gsl_error_handler;
    gsl_error_handler = no_error_handler;
    return previous_handler;
  }
  
  static void
  no_error_handler (const char *reason, const char *file, int line, int gsl_errno)
  {
    /* do nothing */
    reason = 0;
    file = 0;
    line = 0;
    gsl_errno = 0;
    return;
  }
  
  
  